Add functions 'set_loudness' and 'equal_loudness'
Add functions 'set_loudness' and 'equal_loudness'

set_loudness creates a scaled version of the specified file with specified EBU R 128 loudness. 
Use: set_loudness(file_location, loudness_in_dB=-23, ignore_clipping=False)
equal_loudness calls set_loudness for all files in a specified folder, with the same loudness. 
Use: equal_loudness(folder_location, loudness_in_dB=-23, ignore_clipping=False)
jrigden/pyloudness